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Diodes Incorporated FZT869TA
- Part No.:
- FZT869TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Bipolar Transistors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
FZT869TA.pdf
- Description:
- TRANS NPN 25V 7A SOT-223-3
- Quantity:
- Payment:
- Shipping:
Inventory:11,126
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Product details
Overview
FZT869TA from Diodes Incorporated is a 25V NPN high-current transistor in SOT223 package, rated for 7A continuous collector current and 20A peak pulse current, with VCE(sat) < 110mV at 1A and RCE(sat) = 36mΩ at 5A. It delivers high gain (hFE ≥ 200 at 7A) and low on-resistance for efficient switching in power management circuits such as DC-DC converter output stages and motor drive H-bridge legs.
For engineers reviewing the FZT869TA datasheet, FZT869TA pinout, FZT869TA application, or FZT869TA equivalent, key selection criteria include its 25V VCEO, 3W power dissipation with 42°C/W RθJA (on 52mm × 52mm 2oz Cu), JEDEC-qualified reliability, and AEC-Q101 readiness via automotive-grade variants.
Technical Context
This NPN bipolar junction transistor operates in linear and saturated switching modes, with specified hFE up to 20A and fT = 100MHz at IC = 100mA, enabling use in medium-frequency switching applications. Its low VCE(sat) and RCE(sat) reduce conduction losses in high-current paths where thermal management is constrained.
The device features robust absolute maximum ratings: 60V VCBO, 6V VEBO, and ESD HBM rating of 4kV. Thermal performance is defined for two PCB mounting conditions - 42°C/W (52mm × 52mm 2oz Cu) and 78°C/W (25mm × 25mm 1oz Cu) - supporting design flexibility across cost and performance tiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 25V - Maximum safe collector-emitter voltage under open-base condition; defines upper rail limit in switch-mode power supplies. |
| IC (continuous) | 7A - Sustained current-handling capability without thermal runaway when mounted per JEDEC standard (52mm × 52mm 2oz Cu). |
| VCE(sat) @ 1A | <110mV - Ensures ≤110mW conduction loss at 1A, critical for efficiency in battery-powered load switches. |
| RCE(sat) @ 5A | 36mΩ - Enables predictable I²R loss modeling (≤900mW at 5A), simplifying thermal design in high-current drivers. |
| hFE @ 7A | 200–300 - Confirmed current gain at full rated DC current, supporting stable base drive sizing for saturation control. |
| fT | 100MHz - Supports switching frequencies up to ~10MHz in optimized layouts, suitable for PWM-controlled DC-DC stages. |
| RθJA | 42°C/W - Junction-to-ambient thermal resistance under standard test board; determines required heatsinking for 3W operation. |
Pinout & Package
Package: SOT223 (Type DN), surface-mount, 4-pin configuration with emitter-connected tab (pin 3) serving as thermal and electrical connection point. Molded green compound, matte tin-plated leads, 0.112g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Emitter) | Emitter terminal | Primary current return path; electrically and thermally connected to exposed tab for enhanced heat transfer. |
| Pin 2 (Base) | Control input | Low-impedance gate for current-driven switching; requires ~150mA base drive for full 6.5A saturation. |
| Pin 3 (Collector / Tab) | Main current path & thermal interface | Collector connects internally to large copper tab; must be soldered to ≥52mm² 2oz Cu pour for rated 3W dissipation. |
| Pin 4 (Emitter) | Secondary emitter connection | Duplicate emitter bond for lower parasitic inductance and improved high-frequency stability in switching nodes. |
Key Features
| Feature | Design Value |
|---|---|
| High-current capability | 7A continuous / 20A pulsed enables single-device replacement of paralleled smaller transistors in compact power stages. |
| Low saturation resistance | 36mΩ RCE(sat) at 5A reduces conduction loss by >40% vs. typical SOT223 NPNs, improving thermal margin in space-constrained designs. |
| JEDEC-qualified reliability | Qualified to AEC-Q101 stress tests and JEDEC standards, supporting industrial and automotive-derivative applications without requalification. |
| Green RoHS compliance | Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb) meets strict environmental requirements for global OEM programs. |
Applications
| DC-DC Converter Output Stage | Automotive LED Driver |
|---|---|
|
Use Scenario: High-efficiency synchronous buck converter output switch operating at 200–500kHz with 5–7A load current. IC Role / Device Role / Timing Role: Main NPN switch in low-side configuration, driven by dedicated gate controller; handles high di/dt during turn-on/turn-off transitions. Use Value: Low VCE(sat) and RCE(sat) minimize conduction loss and thermal rise, allowing operation without external heatsink at ambient ≤70°C. |
Use Scenario: Constant-current driver for high-brightness automotive headlamp LEDs (12V system, 3–5A per channel). IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink transistor regulating LED string current via feedback loop. Use Value: Stable hFE up to 7A ensures precise current regulation across temperature; 150°C max TJ supports under-hood placement. |
| H-Bridge Motor Control Leg | Industrial Solenoid Driver |
|
Use Scenario: One quadrant of an H-bridge driving 24V brushed DC motors (up to 6A stall current) in factory automation actuators. IC Role / Device Role / Timing Role: Low-side switching element commutating motor current; paired with complementary PNP or MOSFET for bidirectional control. Use Value: Fast switching (ton ≤ 60ns, toff ≤ 680ns) minimizes shoot-through risk; 20A ICM withstands motor startup surges. |
Use Scenario: 24V solenoid actuator driver in PLC I/O modules requiring robust 5–7A inductive load switching. IC Role / Device Role / Timing Role: High-current switch interfacing microcontroller GPIO to solenoid coil; includes flyback diode integration in layout. Use Value: 25V VCEO safely clamps inductive kickback; 4kV HBM ESD rating protects against field-installation electrostatic events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-current transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ZXTN2010ZTA | Higher VCEO (30V), lower IC (4A), SOT89 package; RCE(sat) = 45mΩ @ 3A. | Better voltage margin but lower current capacity; unsuitable for >5A loads without derating. | Prefer for 30V systems with <4A average current and tighter board area constraints. |
| MJD127G | TO-220 package, 100V VCEO, 8A IC, higher RCE(sat) (120mΩ @ 5A); requires mechanical heatsink. | Higher voltage and current rating but larger footprint and inferior thermal resistance (RθJA ≈ 60°C/W). | Select when 100V isolation or legacy TO-220 compatibility is mandatory, accepting larger size and heatsink dependency. |
Compared with ZXTN2010ZTA and MJD127G, FZT869TA uniquely balances 7A current, 25V rating, and SOT223 thermal performance - offering optimal power density for space-limited 12–24V industrial and automotive power stages without external heatsinking.
Availability
FZT869TA is available at Aetrix Electronics and suitable for DC-DC converters, automotive LED drivers, and industrial solenoid controllers requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant manufacturing.
Supply support for FZT869TA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
FZT869TA belongs to Diodes' high-current bipolar transistor product line, engineered specifically for high-efficiency, thermally constrained power switching in automotive, industrial, and consumer power management systems.
FAQ
What is the maximum allowable junction temperature for FZT869TA?
The FZT869TA has a specified operating junction temperature range of –55°C to +150°C. Its absolute maximum TJ is 150°C; sustained operation above this threshold risks permanent degradation. Derating begins at +25°C ambient, with linear reduction of power dissipation at 24mW/°C for the standard 52mm × 52mm 2oz Cu mounting condition.
Is FZT869TA qualified for automotive applications?
FZT869TA itself is not AEC-Q101 qualified, but Diodes offers automotive-grade equivalents (e.g., FZT869QTA) with PPAP documentation, manufactured in IATF 16949-certified facilities and tested per AEC-Q101. The base FZT869TA meets JEDEC high-reliability standards and is commonly used in automotive-derivative industrial designs.
How should the SOT223 thermal tab be connected on the PCB?
The exposed collector tab (Pin 3) must be soldered to a minimum 52mm² copper area of 2oz thickness for full 3W power dissipation. For best thermal performance, connect the tab directly to a solid internal ground or power plane using multiple thermal vias (≥6×0.3mm diameter) spaced ≤2mm apart, and avoid isolating it with solder mask.
What base drive current is required to saturate FZT869TA at 6.5A collector current?
Per datasheet Figure 4 and electrical characteristics, VBE(sat) = 1.2V and hFE ≥ 40 at IC = 20A, implying minimum base current of ~163mA for 6.5A. To ensure hard saturation across temperature and process variation, a design target of 300mA base drive (IB = 300mA at IC = 6.5A) is recommended, yielding guaranteed VCE(sat) ≤ 350mV.
FZT869TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 7 A
- Voltage - Collector Emitter Breakdown (Max):
- 25 V
- Vce Saturation (Max) @ Ib, Ic:
- 350mV @ 150mA, 6.5A
- Current - Collector Cutoff (Max):
- 50nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 300 @ 1A, 1V
- Power - Max:
- 3 W
- Frequency - Transition:
- 100MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
FZT869TA FAQ
1.How can I place an order for FZT869TA through Aetrix?
Please submit a Request for Quotation (RFQ) for FZT869TA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for FZT869TA reliable?
The price and inventory of FZT869TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT869TA is usually 5 days.
3.What payment methods are accepted for FZT869TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT869TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FZT869TA?
FZT869TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FZT869TA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for FZT869TA?
For technical support, including FZT869TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT869TA requirements.
6.How does Aetrix verify that FZT869TA is sourced from the original manufacturer or authorized distributors?
All FZT869TA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FZT869TA meets industry standards.
7.What is the process for return or replacement of FZT869TA?
All FZT869TA units undergo pre-shipment inspection (PSI). If there is an issue with FZT869TA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The FZT869TA part is unused and in its original packaging.
Return procedure for FZT869TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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